CROSSOVER TURBO

2008 Suzuki SX4 • 4 cylinder AWD Manual • 3,700 miles

Hi, I have a 2008 Suzuki Sx4 Crossover all mods. I was wondering why my car sputters when I start it up and when I take off in first gear and it misfires at like 50 mph and at random times. Sometimes it takes off fine, but its random. Is there anything I can do to fix it. The car only has 3700 miles on it.